Quiz: Chinese mystery charger, anybody knows what this is?
- Thread starter iljak
- Start date
dogman dan
1 PW
Looks like you stumped the chumps. I've not seen that one, looks like a 1958 device. Bumped to let some more chumps see it.
tmho
1 kW
It should be used for charging cellphone batteries.
I got a quick answer from E-city power/BMS, and they are quite helpfull. This is what they wrote;
'it is used for charge the battery of cellphone.
each of the iron part in the charger connects the +and - of the battery.
you can also cut the USB wire to connect the +and - of the cell and plug the USB plug to computer or some other usb ports.
after voltage of the cell reaches 2.5v, you can stop charging.'
One of the 38120 cells in my pack read zero volts when i got it brand new. I tried to breath new life into it as the manufacturer suggested, in vain.
The cell can be charged to 3.6 Volts, but when i drain the pack, this cell drops to below LVC, whilst the rest of the cells all read still 3.3.
Any insigths?
'it is used for charge the battery of cellphone.
each of the iron part in the charger connects the +and - of the battery.
you can also cut the USB wire to connect the +and - of the cell and plug the USB plug to computer or some other usb ports.
after voltage of the cell reaches 2.5v, you can stop charging.'
One of the 38120 cells in my pack read zero volts when i got it brand new. I tried to breath new life into it as the manufacturer suggested, in vain.
The cell can be charged to 3.6 Volts, but when i drain the pack, this cell drops to below LVC, whilst the rest of the cells all read still 3.3.
Any insigths?
dnmun
1 PW
they should replace it. it was defective when you received it if it was at 0V. it may have shorted in the shipment.
This BMS/E-city-power pack (48V LiFePO4 10Ah 30-60A BMS) drives me CRAZY!!!!!
When the battery pack arrived it had one bad cell, reading 0V. I replaced this bad 0V cell for a brand new one (expensive headway bought here in europe). I charged this new cell individually to 3.6V.
Charge the pack fully, all cells read 3.6V. When i leave it overnight, the BMS apparantly slowly drains this one cell down to 3.30 (and another one to 3.33 as i just found out), while all other cells are properly 3.6V.
When i ride it, it will only deliver about 7Ah, then it shuts off because of the LVC of this one cell (2.2V).
The correspondence with e-city power has gone silence....
(coincidentally i bougth a 36V pack form the E-city power earlier, which is figthing me all the way too...is it just my bad luck? Or does BMS/E-city power sell the worst quality products ever?..)
When the battery pack arrived it had one bad cell, reading 0V. I replaced this bad 0V cell for a brand new one (expensive headway bought here in europe). I charged this new cell individually to 3.6V.
Charge the pack fully, all cells read 3.6V. When i leave it overnight, the BMS apparantly slowly drains this one cell down to 3.30 (and another one to 3.33 as i just found out), while all other cells are properly 3.6V.
When i ride it, it will only deliver about 7Ah, then it shuts off because of the LVC of this one cell (2.2V).
The correspondence with e-city power has gone silence....
(coincidentally i bougth a 36V pack form the E-city power earlier, which is figthing me all the way too...is it just my bad luck? Or does BMS/E-city power sell the worst quality products ever?..)
dnmun
1 PW
i thought we covered the dead cell already on another thread of yours but in order to say that there is a problem with the BMS, you have to test that channel to see if the shunt transistor is turned on below the 3.60V balancing voltage. i have tried and tried to also get the other guy there who is also saying he has a bad BMS to test his BMS too. but no information from him either.
LockH
1 PW
The charger apparently has iron parts (most of the rest of the world moved on to copper metal wires, etc years ago).
Similar threads
